Breathing mask



FIG. 1 is a front view showing the outside of the breathing mask,showing our new design;

FIG. 2 is a back view of the breathing mask shown in FIG. 1, showing theinside of the breathing mask;

FIG. 3 is a right hand side view of the breathing mask shown in FIG. 1;

FIG. 4 is a left hand side view of the breathing mask shown in FIG. 1;

FIG. 5 is a top view of the breathing mask shown in FIG. 1; and,

FIG. 6 is a bottom view of the breathing mask shown in FIG. 1.

CLAIM The ornamental design for a breathing mask, as shown anddescribed.